Allow to get tooltips to popup instantly on hover

Add an "instant popup" property on ToolTipContent allowing to control
for a given tooltip to popup immediately when the corresponding widget
is hovered. The default is the usual behavior though.

The ToolTipManager behavior itself got adjusted to take care of the
instant popup flag.

tooltipcontent.cpp

@@ -51,6 +51,7 @@ class ToolTipContentPrivate
 public:
     ToolTipContentPrivate()
       : autohide(true),
+        instantPopup(false),
         clickable(false),
         highlightWindows(false)
     {
@@ -63,6 +64,7 @@ public:
     QHash<QString, ToolTipResource> resources;
     QWeakPointer<QGraphicsWidget> graphicsWidget;
     bool autohide : 1;
+    bool instantPopup : 1;
     bool clickable : 1;
     bool highlightWindows : 1;
 };
@@ -200,6 +202,16 @@ bool ToolTipContent::autohide() const
     return d->autohide;
 }
 
+void ToolTipContent::setInstantPopup(bool enabled)
+{
+    d->instantPopup = enabled;
+}
+
+bool ToolTipContent::isInstantPopup() const
+{
+    return d->instantPopup;
+}
+
 void ToolTipContent::addResource(ResourceType type, const QUrl &path, const QVariant &resource)
 {
     d->resources.insert(path.toString(), ToolTipResource(type, resource));

tooltipcontent.h

@@ -166,6 +166,22 @@ public:
      */
     bool autohide() const;
 
+    /**
+     * Sets whether or not the tooltip should popup instantly when
+     * the widget is hovered, defaults to false.
+     *
+     * @since 4.7
+     */
+    void setInstantPopup(bool enabled);
+
+    /**
+     * Whether or not the tooltip should popup instantly when
+     * the widget is hovered, defaults to false.
+     *
+     * @since 4.7
+     */
+    bool isInstantPopup() const;
+
     /**
      * Adds a resource that can then be referenced from the text elements
      * using rich text

tooltipmanager.cpp

@@ -140,12 +140,17 @@ void ToolTipManager::show(QGraphicsWidget *widget)
         return;
     }
 
+    qreal delay = 0.0;
+    ToolTipContent content = d->tooltips[widget];
+
+    if (!content.isInstantPopup()) {
         KConfig config("plasmarc");
         KConfigGroup cg(&config, "PlasmaToolTips");
-    qreal delay = cg.readEntry("Delay", qreal(0.7));
+        delay = cg.readEntry("Delay", qreal(0.7));
         if (delay < 0) {
             return;
         }
+    }
 
     d->hideTimer->stop();
     d->delayedHide = false;